Wagon-jack



( Model.)

G. OADY.

WAGON JACK.

No. 329,999. Patented Nov. 10; 1885.

UNITED STATES PATENT QEEIcE.

HENRY G. GADY, OF PINE BLUFF, ARKANSAS.

WAGON-JACK.

SPECIFICATION forming part of Letters Patent No.329,999, dated November 10, 1885.

Application filed September 28, 1885. Serial No.1'78,465. (No model.)

To all whom it may concern.-

Be it known that I, HENRY G. CADY, a citizen of the United States. residing at Pine Bluff, in the county of Jefferson and State of Arkansas, have invented certain new and use ful Improvements in VVagon-Jacks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the drawings and letters of reference marked thereon, which form a part of this specification.

Like letters refer to similar parts throughout the several views.

My invention relates to lifting -jacks, and has for its object to provide a simple and inexpensive device for raising heavy weights, its construction specially adapting it to use in raising the axle-trees of wagons; and to this end it consists in the construction and combination of parts hereinafter specified, and afterward defined in the claims.

Re erring to the drawings, Figure 1 is a perspective view of my device. Fig. 2 is a vertical section of the same. Fig. 3 is a detail showing the bearing-block detached. Fig. 4 is a modification.

A represents a liftingjack constructed in accordance with my invention. To opposite sides of the operating-lever B and on one end of the same are securely bolted or otherwise secured heavy metallic plates 0 O. The plate 0 is extended down some distance upon the face of the operating-lever and the edges of the same are bent over and-embrace the corners of the lever. That portion of the plate 0 which projects beyond the end of the lever is extended so as to form the arms I) and c at right angles to arm a. One end of the short fulcrum-arm D is pivotally secured between'the ends I) b of the corresponding plates, 0 0, upon a bolt passed through the same. The pivoted end of the fulcrum-arm D is rounded, so as to form a bearing for the arm E. The long arm E,

. pivoted at one of its ends between the plates O O, at the extremities of the arms 0 c, is provided at intervals along its upper face with downwardly-inclined notches d d.

F is an adjustable bearing-block provided with a central opening, through which the arm E is passed, the opening in the block being of sufficient size to allow the same to be moved freely upon the arm. To the upper end of the bearing-block is rigidly secured one end of a metallic spring, G, which is extended across the upper end of the block and down upon the outer face of the same to such a distance as to cause its lower end to be flush with the upper edge of the opening through the block when the spring is relaxed. Thatportion of the spring which extends downward over the outer face of the adjustingblock is provided with an elongated slot or opening, a, through which the screw f is passed, which serves to prevent the spring from becoming laterally displaced, while it admits of a free vertical movement.

From the foregoing description the operation of the device will be readily understood.

The adjustable bearing-block is placed at a desired point upon the arm E, and the same is inserted beneath the axle-tree of the wagon or other weight to be lifted. By forcing the operating-arm downward the jack is caused to assume the position indicated by dotted lines in Fig. 2 of the drawings. The weight resting upon the spring forces the same downward, and its lower end engaging with the slot d, the block is held securely in place. Upon relieving the spring of the weight it is at once freed from engagement with the slot, and the block is permitted to move freely upon the arm E.

Having thus described my invention and set forth its merits, what I claim to be new, and desire to secure by Letters Patent, is

1. In a device for the purpose described, the combination of the lever B, metallic plates 0 0, arms D E, pivotedly attached, with the adjustable bearing-block F, provided with the spring G, all arranged and operating substantially as described.

2. The combination, with one arm of a liftingjack, of a movable bearingblock arranged upon the arm, and adapted to engage therewith by means of a spring operated by the weight of the body lifted, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY G. OADY.

Witnesses:

ERNEST BEELER, J. L. ARMFIELD.

ILO 

